hi freinds please help me de unlock my dell latitude E6430 the display message is : dell security manager "this computer system, #H8B8YW1-1D3B, is protected by a password authentification system. you can not access the data on this computer without the correct password. please type the system or administrator password." i learn that the password in enbeddeb in MEC5055 so is no possible de reset it or i have to buy a new motherboard (it 's very expensive)